Matterello

Polymer clay becomes hard as it ages;as a result, it is difficult or even impossible to shape and use, especially if it has been exposed to the air.However, many people don't know that even the most hardened piece can be salvaged.There are several methods you can use to regenerate this material, from hand mixing to adding oils and thinners;Using one or more of these remedies, you can turn a stone-hard block of polymer clay into a moldable mass.